data_global _amcsd_formula_title '(NH3CH3)Al(SO4)2*12H2O' loop_ _publ_author_name 'Abdeen A M' 'Will G' 'Schafer W' 'Kirfel A' 'Bargouth M O' 'Recker K' 'Weiss A' _journal_name_full 'Zeitschrift fur Kristallographie' _journal_volume 157 _journal_year 1981 _journal_page_first 147 _journal_page_last 166 _publ_section_title ; X-ray and neutron diffraction study of alums II. The crystal structure of methylammonium aluminium alum III. The crystal structure of ammonium aluminium alum Sample: neutron data ; _database_code_amcsd 0010841 _chemical_formula_sum 'N H30 C Al S2 Os8 O12' _cell_length_a 12.314 _cell_length_b 12.314 _cell_length_c 12.314 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1867.228 _exptl_crystal_density_diffrn 6.620 _symmetry_space_group_name_H-M 'P a 3' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+z,x,1/2-y' 'z,1/2-x,1/2+y' '1/2-z,1/2+x,y' '-z,-x,-y' '1/2+y,1/2-z,-x' '1/2-y,-z,1/2+x' '-y,1/2+z,1/2-x' 'y,z,x' 'x,1/2-y,1/2+z' '1/2-x,1/2+y,z' '1/2+x,y,1/2-z' '-x,-y,-z' '1/2-z,-x,1/2+y' '-z,1/2+x,1/2-y' '1/2+z,1/2-x,-y' 'z,x,y' '1/2-y,1/2+z,x' '1/2+y,z,1/2-x' 'y,1/2-z,1/2+x' '-y,-z,-x' '-x,1/2+y,1/2-z' '1/2+x,1/2-y,-z' '1/2-x,-y,1/2+z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_U_iso_or_equiv N 0.51560 0.51560 0.51560 0.50000 0.03420 Hn 0.08370 0.53630 0.02750 0.50000 0.07852 C 0.45010 0.45010 0.45010 0.50000 0.12412 Hc 0.38510 0.50720 0.41340 0.50000 0.16718 Al 0.00000 0.00000 0.00000 1.00000 0.02280 S 0.30220 0.30220 0.30220 1.00000 0.02406 Os1 0.23410 0.23410 0.23410 1.00000 0.06206 Os2 0.69110 0.75300 0.09140 1.00000 0.05699 Ow1 0.85210 0.98100 0.01850 1.00000 0.02786 Ow2 0.04190 0.13730 0.29750 1.00000 0.03673 H1 0.54230 0.20180 0.47280 1.00000 0.03166 H2 0.41320 0.18460 0.45020 1.00000 0.03926 H3 0.21430 0.49410 0.19440 1.00000 0.05193 H4 0.21480 0.61030 0.16970 1.00000 0.05066 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 N 0.03380 0.03380 0.03380 0.00691 0.00691 0.00691 Hn 0.00922 0.09218 0.13443 0.00768 0.01229 0.01306 C 0.12445 0.12445 0.12445 -0.01152 -0.01152 -0.01152 Al 0.02305 0.02305 0.02305 0.00000 0.00000 0.00000 S 0.02381 0.02381 0.02381 -0.01152 -0.01152 -0.01152 Os1 0.06146 0.06146 0.06146 0.00461 0.00461 0.00461 Os2 0.04379 0.09065 0.03687 -0.01075 0.01306 -0.03918 Ow1 0.01690 0.03380 0.03226 -0.00230 0.00845 0.00154 Ow2 0.04071 0.04302 0.02689 -0.00154 -0.01460 -0.01306 H1 0.01075 0.03380 0.04840 -0.01383 -0.00691 -0.00077 H2 0.03995 0.03150 0.04532 0.01613 -0.01460 -0.00384 H3 0.05070 0.05685 0.04840 -0.00615 0.02228 0.01767 H4 0.06914 0.03457 0.04840 -0.00384 0.00999 0.00077